<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom"
        v-for="item of list"
        :key="item.id"
        @click="handleCityClick(item.name)">{{item.name}}</li>
         <li class="search-item border-bottom" v-show="hasNoData">
           没有找到匹配数据
         </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import BScroll from "better-scroll"
  import { mapMutations } from 'vuex'
  
  export default {
    name: 'CitySearch',
    props:{
      cities:Object
    },
    data(){
      return{
        keyword:'',
        list:[],
        timer:null
      }
    },
    computed:{
      hasNoData () {
        return !this.list.length
      }
    },
    watch:{
      keyword(){
        if(this.timer){
          clearTimeout(this.timer)
        }
        if(!this.keyword){
          this.list = []
          return
        }
        this.timer = setTimeout(() =>{
          const result = []
          for (let i in this.cities) {
            this.cities[i].forEach((value) =>{
              if(value.spell.indexOf(this.keyword)> -1 ||
              value.name.indexOf(this.keyword)> -1){
                result.push(value)
              }
            })
          }
          this.list= result
        },100)
      }
    },
   methods:{
     handleCityClick (city) {
       this.changeCity(city)
       this.$router.push('/')
     },
     ...mapMutations(['changeCity'])
   },
    mounted (){
      this.scroll = new BScroll(this.$refs.search)
    }
  }
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
   height :.72rem
   padding :0 .1rem
   background :$bgColor
   .search-input
    box-sizing :border-box
    width :100%
    height :.62rem
    padding :0 .1rem
    line-height .62rem
    text-align :center
    border-radius :.06rem
    color :#666
  .search-content
    z-index :1
    overflow :hidden
    position: absolute
    top: 1.58rem
    left :0
    right :0
    bottom :0
    background: #eee
    .search-item
      line-height :.62rem
      padding-left : .2rem
      color :#666
      background :#fff


</style>
